Added gems for AWS DynamoDB development.
The class DynamoDbModel::Base now exists and is ActiveModel::Model compliant.
Fields can now be defined.
Fields are now gettable and settable, have types and defaults.
lock_version defaulted properly.
More TODO specs.
Removed spec/dummy/config/config.yml from source control.
CloudModel now handles the schema of the SQL version.
Renamed DynamoDB specs, added file for queries.
Primary key can now be declared.
assign_attributes added.
Renamed a couple of methods.
ActiveRecord style table naming with prefix and suffix implemented.
Tables are now autocreated on AWS.
Tables can now be deleted.
Read and write capacity units can now be specified (for creation).
Almost all callbacks defined. Table keys set when retrieving table. Predicates added.